Meet the Green House Cocktail Beer Server: a mini kegerator for your home that can serve all kinds of beer with foam. It uses ultrasonic vibration at 40k times per second to create thick foam. It is powered by 2 x AAA batteries and does not require CO2 gas cartridges.
The Green House Cocktail Beer Server weighs only 3.84lbs, so you can easily move it around. You can find out more about it here.